Cauliflower and Chickpeas Curry

Name: Cauliflower and Chickpeas Curry
Ingredients: 1 cup cauliflower; 15 ounces chickpeas; 1 onion; 1 teaspoon garlic powder; 1 teaspoon cumin powder; 1 tablespoon curry powder; 13 ounces coconut milk; 1 handful cilantro; 3 tablespoons olive oil; salt and pepper; 15 ounces petite diced tomatoes